FSC 4140 — Fans, Air Circulators, and Blower Equipment · FSG 41 — Refrigeration, AC, and Air Circulating Equipment
Government record, cited
Also searched as4140-01-646-7779 ·
4140016467779 ·
NIIN 016467779 ·
01-646-7779 ·
FSC 4140 Fans, Air Circulators, and Blower Equipment
Nearby stock numbers← 4140-01-646-7141 Fan Assembly, Centrifugal
·
4140-01-646-8441 Fan Assembly, Tubeaxial →
Features
Housing,centrifugal Fan — FSC 4140
Identification
NSN: 4140-01-646-7779
NIIN: 016467779
FSC: 4140 — Fans, Air Circulators, and Blower Equipment
FSG: 41 — Refrigeration, AC, and Air Circulating Equipment
General Description
The Housing,centrifugal Fan, cataloged under National Stock Number 4140-01-646-7779, is classified within Federal Supply Class 4140 (Fans, Air Circulators, and Blower Equipment) of the Refrigeration, AC, and Air Circulating Equipment group. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
4140-01-646-7779
Item Name
Housing,centrifugal Fan
FSC / FSG
4140 / 41 — Fans, Air Circulators, and Blower Equipment
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL Q — CCL Item — Commerce Control List
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
901-025-937-115
3/2Design control — primary reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 4140 — Fans, Air Circulators, and Blower Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4140-00-000-0082
IMPELLER,FAN,AXIAL
4140-00-001-1517
FAN,CENTRIFUGAL
4140-00-001-1536
FAN,VENTILATING
4140-00-001-1537
4140-00-001-1537 · Item name not on file
4140-00-001-3930
4140-00-001-3930 · Item name not on file
4140-00-001-6464
4140-00-001-6464 · Item name not on file
4140-00-001-6874
4140-00-001-6874 · Item name not on file
4140-00-001-6875
4140-00-001-6875 · Item name not on file
Frequently Asked Questions
What is NSN 4140-01-646-7779?
NSN 4140-01-646-7779 is a Housing,centrifugal Fan, classified under FSC 4140, Fans, Air Circulators, and Blower Equipment. Status: active.
What are the specifications of 4140-01-646-7779?
Key specifications for 4140-01-646-7779: Special Features: UPGRADED SIRFC LRU-2BS TO DISSIPATE MORE HEAT THAN THE CURRENT LRU-2BS AND REQURIRE MORE COOLING TO MAINTAIN THE SAME AVIONICS TEMPERATURE; Part Name Assigned by Controlling Agency: PLENUM ASSEMBLY, AIRCRAFT. 0 specifications are documented in the U.S. Government catalog.
Is NSN 4140-01-646-7779 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
What is the DEMIL code for NSN 4140-01-646-7779?
NSN 4140-01-646-7779 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.